解决：pytesseract.pytesseract.TesseractNotFoundError: tesseract is not installed or it‘s not in your PATH. See README file for more information.

问题：使用pytesseract库识别图片中文字时出现报错

代码：

import pytesseract
from PIL import Image,ImageEnhance
img=Image.open(r'F:\Test\venv\vfi_code.png')

#修改图片的灰度，提高识别准确性
img=img.convert('RGB')
enhancer=ImageEnhance.Color(img)
enhancer=enhancer.enhance(0)
enhancer=ImageEnhance.Brightness(enhancer)
enhancer=enhancer.enhance(2)
enhancer=ImageEnhance.Contrast(enhancer)
enhancer=enhancer.enhance(8)
enhancer=ImageEnhance.Sharpness(enhancer)
img=enhancer.enhance(20)

code=pytesseract.image_to_string(img,lang='chi_sim')
print(code)

原因：在安装pytesseract库后还需要安装Tesseract-OCR才能正常使用

解决办法：

1）先下载对应版本的Tesseract-OCR并安装，安装时记得把语言包都勾上。下载链接：Index of /tesseract

没有勾选语言包会有这个报错：

pytesseract.pytesseract.TesseractError: (1, 'Error opening data file C:\\Program Files\\Tesseract-OCR/tessdata/chi_sim.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory. Failed loading language \'chi_sim\' Tesseract couldn\'t load any languages! Could not initialize tesseract.')

2）将安装路径C:\Program Files\Tesseract-OCR 添加到系统环境变量Path里；再增加一个TESSDATA_PREFIX变量名，变量值还是我的安装路径C:\Program Files\Tesseract-OCR\tessdata这是将语言字库文件夹添加到变量中;

3）打开终端，输入：tesseract -v，可以看到版本信息

4）在pytesseract库下的pytesseract.py文件中找到tesseract_cmd = 'tesseract'，修改成            tesseract_cmd =r'C:\Program Files\Tesseract-OCR\tesseract.exe'

5）再运行脚本就没有报错了

参考链接：https://www.jianshu.com/p/93ab58dea50f